Ever need to record an important telephone conversation? The TP-8, telephone pickup, makes phone recording two sides of the conversation. Just plug the TP-8 jack into the "MIC" jack of your recorder, and put the earphone side into your ear. When speaking on the telephone, the TP-8 will capture both sides of the conversation for recording by your voice recorder.
The TP-8 will only act as a microphone. It will not playback sound.